Planning a child’s birthday party, but don’t want to go overboard with expensive invitations? Go old-school (and affordable) with these precious Boy/Girl Cake Birthday Party Invitations by vintage-style stationery shop Fenderskirts. A package of 10 fill-in invitations and envelopes costs $10; for an extra $5 they’ll print your info. on the invitations for you. See all of the other sweet retro designs here. I love them all!